Organization and Information Support of Expert Reviews of I&C Systems Modernization at NPP of Ukraine - Nuclear Power Plant Instrumentation and Control Systems for Safety and Security - page 391

• To create knowledge base at NPP I&C

systems (set of diferent information and
documents concerning new and modern-
ized NPP I&C systems, including expert
review reports);

and standards on NRS on the basis of information
presented in documents substantiating safety of
NPP I&C system.
Expert activity is a labor-intensive process,
during which experts need to analyze and assess
a considerable amount of different information.
A modern level of development of computer and
software technologies allow performing automa-
tion of information support to expert activity (in
particular, in the field of NPP I&C safety). As one
of the principle directions of such automation,
a knowledge base at NPP I&C systems and an
automated system for support of expert activity
in future are suggested for creation.
Development of such software is a promising
direction in the development of review process and
creates prerequisites for improvement of safety
assessments for NPP I&C systems.

• To develop automated system for support

of expert activity (software shell for efec-
tive work with the knowledge base).

FUTURE RESEARCH DIRECTIONS

The future research directions can be as follows:

• Development of safety assessment meth-
ods for NPP I&C systems, taking into ac-
count requirements of modern national and
international standards;
• Improvement of structure and functional
subsystems of the automated system for
support of expert activity;
• Addition of new information into the
knowledge base and its constant updating;

REFERENCES

Bashlykov, A. (1986). Designing of decision-
making systems in power engineering . Moscow,
Russia: Enrgoatomizdat.

• Provision of similar means for information

support in reviews of nuclear and radiation
safety not only within NPP I&C systems,
but also in other directions (for example,
operational safety, neutron physical pro-
cesses, radiation safety, strength and reli-
ability of NPP structures etc.).

Beliy, E. et al. (2008). Infomedia development
concept in the state scientific and technical cen-
tre for nuclear and radiation safety. Nuclear and
Radiation Safety , 2 , 59-68.

DSTU. (1999). Information technologies: Pro-
cesses of software life cycle . Kiev, Ukraine:
State Committee of Ukraine on Standardization,
Metrology and Certification.

CONCLUSION

NPP instrumentation and control systems pass sev-
eral life cycle stages from elaboration of concept
of the modernization concept for operating I&C
system or implementation of new I&C system till
its putting into stationary operation.
At all life cycle stages of the NPP I&C sys-
tem the licensing expert review of nuclear and
radiation safety is performed. The expert review
consists in assessment of compliance of the NPP
I&C system with requirements of guides, rules

GND. (2000). Methods of assessment of compli-
ance of I&C systems important to NPP: Safety
with nuclear and radiation safety requirements .
Kiev, Ukraine: State Nuclear Regulatory Admin-
istration of Ukraine.

Goldrin, V. et al. (2001). NPP instrumentation and
control systems safety standardization and assess-
ment (3), principles of hardware life extension.
Nuclear and Radiation Safety , 2 , 24-29.